QLED screens have dominated the market for long now. QLEDs consist of a large number of of spherical semiconductor nanocrystals called quantum dots. While this technology provides bright , intense colours but they scatter light in all directions, resulting in immense loss of energy. To overcome this limitation, scientists have been trying for years to reduce scattering losses to make this technology energy efficient. ETH scientists have now modified the QLED technology for screens by arranging several ultra-thin nanoplatelets on top of each other. The new technology will reduce scattering losses as it gives light only in one direction and thus pave the way for developing energy-efficient QLED screens.
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